The shot count per tank will change more than you think. Weather, marker setup, paint to barrel match. Also if your rolling off strings of paint your gonna get less that just popping one or two here & there.

About the worse count from my 20oz was about 1/2 case in the dead of winter.

Paintballadict18

07-13-2007, 09:34 PM

realy? wow the worst mine has done was in summer

oldironmudder

07-13-2007, 09:37 PM

Ya, it was a real crappy setup, kinda threw it together just so i could play.

Paintballadict18

07-13-2007, 09:53 PM

lol

agurish

08-08-2007, 01:41 PM

I am a huge CO2 evangelist, so I have a fair idea what I'm talking about.

A 20 oz CO2 tank should consistently get between 1000 and 1250 shots dependent on a few factors:

1.) Ambient air temperature - around 70 degrees F is ideal. Higher, and you do better, lower, and you do worse.

2.) Shooting style - CO2 doesn't change phase very rapidly, it takes a few seconds for it to totally convert from liquid to gas. Therefore, if you out-shoot your CO2 tank, you'll start pulling liquid into your marker.

3.) Ball/bore match - The better the match, the more efficient your marker will be.

4) How much of a gas-hog your marker is, i.e. the operating pressure required to cycle the action. Most stock Spyders fall in the 600 to 800 psi range. Polishing, etc can cause this to go down. I run my MR-1 w/o any modifications at 500 psi.

A 9-oz tank will allow you to shoot roughly 300 to 600 shots. My current setup has 2-20oz CO2 tanks connected to a manifold that I made, which is then connnected to a Palmer STABILIZER "inline" style regulator, and then to my remote line. When I played this past weekend, I shot about 1500 shots before having my tanks topped off (just to be on the safe side). One tank required about 8 oz, the other 4, so i used about 12 oz of CO2. Very efficient.